Hello,

I can call:
    controlP5.addTextfield("test_textfield",10,10,200,20).setId(1);
    ((Textfield)controlP5.controller("test_textfield")).setValue("100");
that works fine.

Now with a group I can call:
    controlP5.addGroup("test_group",100,10)).setId(2);

So i would like to call:
    ((Controllergroup)controlP5.controller("test_group")).setBackgroundHeight(150);
but this doesn't work.

My question: what is the syntax to address a dynamic made group in controlP5?

Thanks,
Bas